Constant-frequency control circuit for a switching voltage regulator of the hysteretic type
US6396251B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 6, 2001 |
| Grant date | May 28, 2002 |
| Priority date | — |
| Expiry date | Mar 6, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M3/158
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention relates to a control circuit for a hysteretic switching voltage regulator, which comprises a logic circuit driving an output stage; a hysteresis comparator comparing the voltage value at the output of the regulator with a reference voltage; a current sensor for sensing, through a comparator, the current drain of a load connected to the output of the regulator. This control circuit further comprises a device for adjusting the hysteresis range of the hysteresis comparator, and a hysteresis frequency sensing and controlling logic portion connected to the output of the hysteresis comparator, the logic portion acting on the frequency adjusting device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.